US4277690A - Plant for utilizing kinetic energy - Google Patents

Plant for utilizing kinetic energy Download PDF

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Publication number
US4277690A
US4277690A US06/064,351 US6435179A US4277690A US 4277690 A US4277690 A US 4277690A US 6435179 A US6435179 A US 6435179A US 4277690 A US4277690 A US 4277690A
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Prior art keywords
piston
plant
pipe
hydraulic
hydraulic motor
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Expired - Lifetime
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US06/064,351
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English (en)
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Sven A. Noren
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1845—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem
    • F03B13/187—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem and the wom directly actuates the piston of a pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Definitions

  • the present invention relates to plant for utilizing kinetic energy inherent in the wave movement of water or the heaving of the sea.
  • Such plant comprises at least one float unit at the water surface and anchored in such a way that it can move freely, without limitation in conjunction with the wave movement, and substantially vertically.
  • the plant has at least one movement-inhibiting and energy-absorption apparatus connected to the float unit.
  • a not inconsiderable improvement of the power per unit surface can be obtained with a runner system provided with inlet and outlet hoppers of the venturi type, which give a velocity increase in the runner cross section.
  • Such an arrangement can give a power increase of 5 to 10 times, but the power per unit surface is however too low in relation to the costs of the structure and for enabling use other than in special cases where investment and running costs are of minor importance.
  • a further improvement in efficiency can be obtained if the runners are built into an acceleration pipe executing a vertical oscillating motion.
  • the enclosed liquid column or head is given an accompanying movement due to the flow resistance offered by the runners and by any restriction of the pipe area which may possibly be arranged. If, for example, the tube with its fixedly mounted turbine unit is accelerated upwards, there is an excess pressure under the liquid column lying above the runner and a subpressure above the liquid column under the runner. The sum of these pressures gives the driving force to the runner.
  • the maximum acceleration will be about 1 m/sec. 2 .
  • a pipe 25 m long will then give rise to a pressure difference of 25000 N/m 2 .
  • This corresponds to a hydraulic turbine plant with a head of 2.5 m.
  • a runner oscillated up and down in open water in a similar way can only utilize the dynamic pressure, which will be at a maximum of about 500 N/m 2 for the assumed wave height of 2 m. This corresponds to a head of only 0.05 m.
  • the present invention has the object of providing a plant for utilizing the wave energy in water, enabling a more efficient and uniform reception of energy and energy conversion than what has been possible with the plant of this kind known up to now.
  • FIG. 1 illustrates in perspective a plant in accordance with the invention with float unit and acceleration pipe.
  • FIG. 2 is a longitudinal section of the upper part of the plant in FIG. 1, schematic hydraulic circuits built into the float unit also being shown.
  • the plant illustrated in FIG. 1 mainly consists of an acceleration pipe 1 and a float unit 2 anchored to the bottom by means of moorings 3.
  • the buoyancy of the float unit 4 is so dimensioned, and the length of the acceleration pipe 1 so adjusted that the upper end 4 of the pipe 1 is under the water surface 5.
  • FIG. 2 which also schematically illustrates the hydraulic circuits of the plant inside the float unit 2.
  • the pipe 1 has a portion 6 with increased cross section, in which there is accommodated an immersed piston 7 which is moved up and down inside the portion 6 by the water column inside the pipe 1.
  • the piston 7 Via a piston rod 8, the piston 7 is connected to the piston 9 in ahydraulic cylinder 10.
  • the piston rod 8 is thus common for pistons 7 and 9,and goes through both end walls of the cylinder 10.
  • the pistons 7 and 9 thus move parallel to each other, with the movement of the latter forciblycontrolled by the piston 7.
  • the shaft 14 isprovided with a flywheel 18.
  • the hydraulic circuit is also provided with an overflow tank or reservoir 19 and a non-return valve 20 between the tank and motor, which is open as soon as the volume flow from the cylinder 10 falls below the volume flow maintained through the motor by reason of the flywheel 18. The circuit then has idling circulation until the cylinder 10 increases its volume flow to come abreast with the volume flow through the motor 12.
  • a filter 21 is positioned between the output side of the motor and the reservoir 19.
  • the hydraulic motor can have a variable displacement and be pressure-compensated, so that its displacement decreases when the volume flow from the cylinder tends to decrease. The operation of the generator can thereby continue for a further portion of the working cycle, without the non-return valve 20 needing to open.
  • the pipe length is greater than half the wave length.
  • a 2 the equivalent constriction area, i.e. the area of a constriction placed in the pipe which gives the same retardation of the oscillating liquid column as the actual energy absorption means.
  • h A half the wave height, i.e. the wave amplitude

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
US06/064,351 1978-08-16 1979-08-07 Plant for utilizing kinetic energy Expired - Lifetime US4277690A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7808679 1978-08-16
SE7808679A SE423431B (sv) 1978-08-16 1978-08-16 Aggregat for tillvaratagnade av rorelseenergi, som er bunden i vattnets vagrorelse

Publications (1)

Publication Number Publication Date
US4277690A true US4277690A (en) 1981-07-07

Family

ID=20335599

Family Applications (1)

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US06/064,351 Expired - Lifetime US4277690A (en) 1978-08-16 1979-08-07 Plant for utilizing kinetic energy

Country Status (10)

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US (1) US4277690A (enrdf_load_stackoverflow)
JP (1) JPS5529088A (enrdf_load_stackoverflow)
AU (1) AU522819B2 (enrdf_load_stackoverflow)
DE (1) DE2932842A1 (enrdf_load_stackoverflow)
FR (1) FR2433648A1 (enrdf_load_stackoverflow)
GB (1) GB2029907B (enrdf_load_stackoverflow)
IE (1) IE48677B1 (enrdf_load_stackoverflow)
IN (1) IN152867B (enrdf_load_stackoverflow)
NO (1) NO151978C (enrdf_load_stackoverflow)
SE (1) SE423431B (enrdf_load_stackoverflow)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426197A (en) 1980-09-30 1984-01-17 Erwin Elkuch Apparatus for the conversion of power strokes of a random sequence and of random lengths of strokes into potential energy
US4531063A (en) * 1981-08-18 1985-07-23 Tecnomare Spa System for recovering wave energy and its conversion into useful energy
US4631921A (en) * 1985-08-05 1986-12-30 Linderfelt Hal R Float for wave energy harvesting device
WO1997040969A1 (en) * 1996-04-30 1997-11-06 Cifa S.P.A. Apparatus to feed a constant flow of concrete containing additives
US5842838A (en) * 1996-11-04 1998-12-01 Berg; John L. Stable wave motor
WO1999066198A1 (en) * 1998-06-14 1999-12-23 Yosef Feldman Hydrostatic wave energy conversion system
US6140712A (en) * 1996-04-29 2000-10-31 Ips Interproject Service Ab Wave energy converter
US6226989B1 (en) * 1996-04-29 2001-05-08 Ips Interproject Service Ab Wave energy converter
US6291904B1 (en) * 1998-08-21 2001-09-18 Ocean Power Technologies, Inc. Wave energy converter utilizing pressure differences
WO2001092718A1 (en) * 2000-05-26 2001-12-06 Ocean Power Technologies, Inc. Wave energy converters utilizing pressure differences
US6407484B1 (en) 2000-09-29 2002-06-18 Rockwell Technologies Inc Piezoelectric energy harvester and method
US20030001392A1 (en) * 2001-01-16 2003-01-02 James Gerber Wave energy converter (WEC)
US20030193197A1 (en) * 2001-08-09 2003-10-16 Hibbs Bart D. Method of and apparatus for wave energy conversion using a float with excess buoyancy
US20040061338A1 (en) * 2002-09-27 2004-04-01 Woodbridge Thomas C. Reciprocating generator wave power buoy
US20070132432A1 (en) * 2005-12-14 2007-06-14 Sieber Joseph D Oscillating water column energy accumulator
US20070286683A1 (en) * 2006-05-01 2007-12-13 Diana Bull Heave plate with improved characteristics
US20070292259A1 (en) * 2006-06-15 2007-12-20 Kenneth Syung-Kyun Choie Floating power plant for extracting energy from flowing water
US20090139225A1 (en) * 2007-10-26 2009-06-04 National Taiwan University Hydraulic inerter mechanism
US20090243298A1 (en) * 2008-03-25 2009-10-01 Jean Philippe F Minimal wave power generator
US20100034670A1 (en) * 2007-01-25 2010-02-11 Alvin Smith Hydro column
US20110012358A1 (en) * 2008-02-07 2011-01-20 Paul Brewster Wave energy conversion device
US20110012368A1 (en) * 2008-02-26 2011-01-20 Wolfgang Hahmann Energy converting device
US20110041490A1 (en) * 2006-11-29 2011-02-24 YSHAPE, Inc. Hydraulic energy accumulator
RU2416037C2 (ru) * 2009-05-20 2011-04-10 Виктор Анатольевич Кущенко Волновая гидроэлектростанция
US20120153626A1 (en) * 2011-12-16 2012-06-21 Mcfarlane Arthur M G Apparatus for extracting energy from waves traversing a body of water
US20140007568A1 (en) * 2011-03-23 2014-01-09 Michael David Crowley Power capture of wave energy converters
EP2593666A4 (en) * 2010-07-16 2015-11-25 Corpower Ocean Ab ENERGY CONVERSION UNIT AND ENERGY CONVERSION SYSTEM WITH SUCH A UNIT
WO2016200306A1 (en) * 2015-06-08 2016-12-15 W4P Waves4Power Ab Wave energy converter with a differential cylinder
US20180094617A1 (en) * 2016-10-04 2018-04-05 Richard Neifeld Device and Method to Convert Reciprocating Linear Motion into Linear Fluid Flow
US10557453B2 (en) * 2013-07-05 2020-02-11 William Dick Heaving buoy point absorber
US10619621B2 (en) * 2017-07-17 2020-04-14 John M Johnson Energy chain
US20220025843A1 (en) * 2018-05-17 2022-01-27 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US11519379B1 (en) 2021-08-26 2022-12-06 Trb Green Technology Co., Ltd. Hydraulic power generating system
GB2619753A (en) * 2022-06-16 2023-12-20 Katrick Tech Limited Energy harvesting device, system and method of manufacture
US11920588B2 (en) 2021-12-29 2024-03-05 Joseph David SIEBER Compressor for compressing high-pressured fluids

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE427131B (sv) * 1981-07-16 1983-03-07 Interproject Service Ab Aggregat for tillvaratagande av rorelseenergi, som er bunden i vattnets vagrorelse
FR2534320A1 (fr) * 1982-10-07 1984-04-13 Becart Serge Centrale hydro-electrique utilisant la force portante de l'eau
FR2540567B1 (fr) * 1983-02-08 1985-09-13 Monange Jacques Dispositif de recuperation de l'energie de la houle
US4622812A (en) * 1985-04-23 1986-11-18 Thompson Randall Jr Apparatus for deriving energy from variation of the level of a body of fluid
ATE41668T1 (de) * 1986-04-29 1989-04-15 Fischer Karl Ind Gmbh Verfahren und vorrichtung zur herstellung hochmolekularer polyester.
DE3826103A1 (de) * 1988-08-01 1988-12-22 Franz Husnik Wellenkraftwerk, auf ein schiff montiert, welches das auf und ab der wellen ueber eine einzylinder-oelhydraulikpumpe auf einen oelhydraulikmotor uebertraegt, welcher den generator betreibt
DE10008661B4 (de) * 2000-02-24 2004-02-26 Otte, Erhard, Dipl.-Ing. Vorrichtung zur Umwandlung von Wellenenergie in elektrische Energie
GB2428747B (en) * 2005-08-02 2009-10-21 Seawood Designs Inc Wave energy conversion system
UY33798A (es) * 2011-12-12 2013-06-28 Malaneschii Delgado Sergio Joaquin Mecanismo para convertir movimiento lineal alternativo de al menos una pieza en movimiento rotacional continuo aplicado en al menos un eje

Citations (8)

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US1864499A (en) * 1927-11-25 1932-06-21 Grigsby Russell Cole Wave motor driving mechanism
US3487228A (en) * 1967-04-17 1969-12-30 Bernard Kriegel Power generating system
US3783302A (en) * 1972-04-06 1974-01-01 D Woodbridge Apparatus and method for converting wave energy into electrical energy
US3870893A (en) * 1973-10-15 1975-03-11 Henry A Mattera Wave operated power plant
DE2406756A1 (de) * 1974-02-13 1975-05-15 Harald Dr Ing Kayser Hydroelektrischer wellengenerator
US4103490A (en) * 1977-03-28 1978-08-01 Alexander Moiseevich Gorlov Apparatus for harnessing tidal power
GB1530318A (en) * 1974-12-13 1978-10-25 Ryokuseisha Kk Wave-activated generator
US4208878A (en) * 1977-07-06 1980-06-24 Rainey Don E Ocean tide energy converter

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FR557813A (fr) * 1922-10-25 1923-08-16 Dispositifs d'utilisation de la force des vagues
US3515889A (en) * 1967-08-14 1970-06-02 Lamphere Jean K Power generation apparatus
DE1900544A1 (de) * 1969-01-07 1970-08-20 Fritz Pawlowski Wellenkraftmaschine
US3631670A (en) * 1969-09-30 1972-01-04 Treadwell Corp Device to extract power from the oscillation of the sea
SE373639B (sv) * 1973-06-18 1975-02-10 M W Gustafson Anordning for att tillvarata energi som er bunden i vattnets vagrorelse eller sjohevning
DE2365197A1 (de) * 1973-12-31 1975-07-10 Igor Fischer Vorrichtung und anlage zur energiegewinnung
DE2416145A1 (de) * 1974-04-03 1975-10-23 Iwan Andreewitsch Babintsew Einrichtung zur umwandlung von meereswellenenergie in elektrische energie
JPS5160838A (enrdf_load_stackoverflow) * 1974-11-07 1976-05-27 Toyo Electric Mfg Co Ltd
GB1587433A (en) * 1976-09-16 1981-04-01 Loqvist K R Apparatus for utilizing kinetic energy stored in the swell or wave movement of water
JPS5377940A (en) * 1976-12-20 1978-07-10 Esu Rongu Chiyaarusu Electric generator apparatus by using wave power and tide power

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1864499A (en) * 1927-11-25 1932-06-21 Grigsby Russell Cole Wave motor driving mechanism
US3487228A (en) * 1967-04-17 1969-12-30 Bernard Kriegel Power generating system
US3783302A (en) * 1972-04-06 1974-01-01 D Woodbridge Apparatus and method for converting wave energy into electrical energy
US3870893A (en) * 1973-10-15 1975-03-11 Henry A Mattera Wave operated power plant
DE2406756A1 (de) * 1974-02-13 1975-05-15 Harald Dr Ing Kayser Hydroelektrischer wellengenerator
GB1530318A (en) * 1974-12-13 1978-10-25 Ryokuseisha Kk Wave-activated generator
US4103490A (en) * 1977-03-28 1978-08-01 Alexander Moiseevich Gorlov Apparatus for harnessing tidal power
US4208878A (en) * 1977-07-06 1980-06-24 Rainey Don E Ocean tide energy converter

Cited By (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426197A (en) 1980-09-30 1984-01-17 Erwin Elkuch Apparatus for the conversion of power strokes of a random sequence and of random lengths of strokes into potential energy
US4531063A (en) * 1981-08-18 1985-07-23 Tecnomare Spa System for recovering wave energy and its conversion into useful energy
US4631921A (en) * 1985-08-05 1986-12-30 Linderfelt Hal R Float for wave energy harvesting device
US6140712A (en) * 1996-04-29 2000-10-31 Ips Interproject Service Ab Wave energy converter
US6226989B1 (en) * 1996-04-29 2001-05-08 Ips Interproject Service Ab Wave energy converter
WO1997040969A1 (en) * 1996-04-30 1997-11-06 Cifa S.P.A. Apparatus to feed a constant flow of concrete containing additives
US5842838A (en) * 1996-11-04 1998-12-01 Berg; John L. Stable wave motor
US6457307B1 (en) 1998-06-14 2002-10-01 Yosef Feldman Hydrostatic wave energy conversion system
WO1999066198A1 (en) * 1998-06-14 1999-12-23 Yosef Feldman Hydrostatic wave energy conversion system
US6291904B1 (en) * 1998-08-21 2001-09-18 Ocean Power Technologies, Inc. Wave energy converter utilizing pressure differences
WO2001092718A1 (en) * 2000-05-26 2001-12-06 Ocean Power Technologies, Inc. Wave energy converters utilizing pressure differences
US6407484B1 (en) 2000-09-29 2002-06-18 Rockwell Technologies Inc Piezoelectric energy harvester and method
US20030001392A1 (en) * 2001-01-16 2003-01-02 James Gerber Wave energy converter (WEC)
EP1364124A4 (en) * 2001-01-16 2004-04-14 Ocean Power Technologies Inc IMPROVED WAVE AGAIN
US6765307B2 (en) * 2001-01-16 2004-07-20 Olean Power Technologies, Inc. Wave energy converter (WEC)
US20030193197A1 (en) * 2001-08-09 2003-10-16 Hibbs Bart D. Method of and apparatus for wave energy conversion using a float with excess buoyancy
US20040061338A1 (en) * 2002-09-27 2004-04-01 Woodbridge Thomas C. Reciprocating generator wave power buoy
US6791205B2 (en) * 2002-09-27 2004-09-14 Aqua Magnetics, Inc. Reciprocating generator wave power buoy
US20070132432A1 (en) * 2005-12-14 2007-06-14 Sieber Joseph D Oscillating water column energy accumulator
US7836689B2 (en) * 2005-12-14 2010-11-23 Sieber Joseph D Oscillating water column energy accumulator
US20070286683A1 (en) * 2006-05-01 2007-12-13 Diana Bull Heave plate with improved characteristics
US7878734B2 (en) * 2006-05-01 2011-02-01 Ocean Power Technologies, Inc. Heave plate with improved characteristics
US20070292259A1 (en) * 2006-06-15 2007-12-20 Kenneth Syung-Kyun Choie Floating power plant for extracting energy from flowing water
US20110041490A1 (en) * 2006-11-29 2011-02-24 YSHAPE, Inc. Hydraulic energy accumulator
US8308449B2 (en) * 2007-01-25 2012-11-13 Dartmouth Wave Energy Limited Wave energy converter
US8628303B2 (en) 2007-01-25 2014-01-14 Dartmouth Wave Energy Limited Wave energy converter
US20100034670A1 (en) * 2007-01-25 2010-02-11 Alvin Smith Hydro column
US20090139225A1 (en) * 2007-10-26 2009-06-04 National Taiwan University Hydraulic inerter mechanism
US20110012358A1 (en) * 2008-02-07 2011-01-20 Paul Brewster Wave energy conversion device
US8614522B2 (en) * 2008-02-26 2013-12-24 Hydac System Gmbh Energy converting device
US20110012368A1 (en) * 2008-02-26 2011-01-20 Wolfgang Hahmann Energy converting device
US20090243298A1 (en) * 2008-03-25 2009-10-01 Jean Philippe F Minimal wave power generator
RU2416037C2 (ru) * 2009-05-20 2011-04-10 Виктор Анатольевич Кущенко Волновая гидроэлектростанция
EP2593666A4 (en) * 2010-07-16 2015-11-25 Corpower Ocean Ab ENERGY CONVERSION UNIT AND ENERGY CONVERSION SYSTEM WITH SUCH A UNIT
US20140007568A1 (en) * 2011-03-23 2014-01-09 Michael David Crowley Power capture of wave energy converters
US20120153626A1 (en) * 2011-12-16 2012-06-21 Mcfarlane Arthur M G Apparatus for extracting energy from waves traversing a body of water
US10557453B2 (en) * 2013-07-05 2020-02-11 William Dick Heaving buoy point absorber
WO2016200306A1 (en) * 2015-06-08 2016-12-15 W4P Waves4Power Ab Wave energy converter with a differential cylinder
US10495053B2 (en) 2015-06-08 2019-12-03 W4P Waves4Power Ab Wave energy converter with a differential cylinder
US20180094617A1 (en) * 2016-10-04 2018-04-05 Richard Neifeld Device and Method to Convert Reciprocating Linear Motion into Linear Fluid Flow
US10619621B2 (en) * 2017-07-17 2020-04-14 John M Johnson Energy chain
US11788504B2 (en) * 2018-05-17 2023-10-17 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US20230383722A1 (en) * 2018-05-17 2023-11-30 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US20220025844A1 (en) * 2018-05-17 2022-01-27 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US20240401557A1 (en) * 2018-05-17 2024-12-05 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US11566596B2 (en) * 2018-05-17 2023-01-31 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US20240287960A1 (en) * 2018-05-17 2024-08-29 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US20220025842A1 (en) * 2018-05-17 2022-01-27 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US20230167798A1 (en) * 2018-05-17 2023-06-01 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US20220025843A1 (en) * 2018-05-17 2022-01-27 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US11725623B2 (en) * 2018-05-17 2023-08-15 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US12037972B2 (en) * 2018-05-17 2024-07-16 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
US11976622B2 (en) * 2018-05-17 2024-05-07 Lone Gull Holdings, Ltd. Inertial pneumatic wave energy device
EP4141252A1 (en) * 2021-08-26 2023-03-01 TRB Green Technology Co., Ltd. Hydraulic power generating system
US11519379B1 (en) 2021-08-26 2022-12-06 Trb Green Technology Co., Ltd. Hydraulic power generating system
US11920588B2 (en) 2021-12-29 2024-03-05 Joseph David SIEBER Compressor for compressing high-pressured fluids
GB2619753A (en) * 2022-06-16 2023-12-20 Katrick Tech Limited Energy harvesting device, system and method of manufacture

Also Published As

Publication number Publication date
AU522819B2 (en) 1982-06-24
NO792669L (no) 1980-02-19
AU4991379A (en) 1980-02-21
JPS6332986B2 (enrdf_load_stackoverflow) 1988-07-04
NO151978C (no) 1985-07-10
GB2029907A (en) 1980-03-26
GB2029907B (en) 1982-11-10
FR2433648A1 (fr) 1980-03-14
IE791570L (en) 1980-02-16
SE7808679L (sv) 1980-02-17
IE48677B1 (en) 1985-04-17
DE2932842A1 (de) 1980-02-28
FR2433648B1 (enrdf_load_stackoverflow) 1984-10-26
IN152867B (enrdf_load_stackoverflow) 1984-04-21
NO151978B (no) 1985-04-01
SE423431B (sv) 1982-05-03
JPS5529088A (en) 1980-03-01

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